The chi-square test will be used to examine treatment differences on the proportion of support persons whose smokers called the QUITPLAN Helpline at least once between randomization into the study and week 26 (Primary Aim 1). Additionally, the two groups will be compared on the time of the smoker?s first call using the Kaplan-Meier method with a log rank test. Support persons whose smoker does not call the Helpline will be censored at week 26. The mean change in Support Provided Measure total score at weeks 4 and 26 will be compared between treatment groups using a two-sample t-test (Primary Aim 2). For each dependent variable, a secondary analysis, using logistic regression or analysis of covariance as appropriate, will be performed to assess treatment effects adjusting for any baseline characteristics that are found to differ between groups.